:root {
    --bg-deep:    oklch(0.10 0.006 70);
    --bg:         oklch(0.135 0.007 72);
    --surface:    oklch(0.18 0.011 74);
    --surface-2:  oklch(0.225 0.014 76);
    --line:       oklch(0.30 0.012 78 / 0.55);

    --ink:        oklch(0.94 0.014 82);
    --ink-soft:   oklch(0.80 0.018 80);
    --muted:      oklch(0.66 0.020 78);

    --amber:      oklch(0.80 0.148 61);
    --amber-deep: oklch(0.70 0.150 64);
    --fauve:      oklch(0.62 0.150 48);
    --forest:     oklch(0.30 0.055 158);
    --forest-deep:oklch(0.20 0.045 160);

    --font-display: "Bodoni Moda", "Times New Roman", serif;
    --font-body:    "Hanken Grotesk", system-ui, sans-serif;

    --step--1: clamp(0.83rem, 0.79rem + 0.18vw, 0.94rem);
    --step-0:  clamp(1rem, 0.95rem + 0.25vw, 1.15rem);
    --step-1:  clamp(1.25rem, 1.13rem + 0.6vw, 1.6rem);
    --step-2:  clamp(1.6rem, 1.38rem + 1.1vw, 2.4rem);
    --step-3:  clamp(2.1rem, 1.7rem + 2vw, 3.6rem);
    --step-4:  clamp(2.8rem, 2rem + 4vw, 5.5rem);
    --step-hero: clamp(3.4rem, 1.6rem + 8vw, 9rem);

    --gut: clamp(1.25rem, 0.9rem + 1.6vw, 2.5rem);
    --section-y: clamp(5rem, 3.5rem + 7vw, 11rem);
    --maxw: 1280px;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --dur: 0.6s;

    --z-grain: 1;
    --z-sticky: 100;
    --z-header: 200;
    --z-menu: 300;

    --radius: 14px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: 6rem;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--step-0);
    line-height: 1.7;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; }
::selection { background: var(--amber); color: var(--bg-deep); }

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.04;
    letter-spacing: -0.02em;
    text-wrap: balance;
}
p { text-wrap: pretty; }

.grain {
    position: fixed;
    inset: -50%;
    z-index: var(--z-grain);
    pointer-events: none;
    opacity: 0.05;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.skip-link {
    position: absolute; left: 50%; top: -100px;
    transform: translateX(-50%);
    background: var(--amber); color: var(--bg-deep);
    padding: 0.6rem 1.2rem; border-radius: 0 0 10px 10px;
    z-index: 1000; font-weight: 600;
    transition: top 0.25s var(--ease-out);
}
.skip-link:focus { top: 0; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 4px; }

.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.site-header {
    position: fixed; inset: 0 0 auto 0;
    z-index: var(--z-header);
    transition: background 0.4s var(--ease-out), backdrop-filter 0.4s,
                border-color 0.4s, padding 0.4s var(--ease-out);
    border-bottom: 1px solid transparent;
    padding-block: clamp(0.9rem, 0.6rem + 1vw, 1.4rem);
}
.site-header.is-scrolled {
    background: oklch(0.10 0.006 70 / 0.72);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom-color: var(--line);
    padding-block: 0.7rem;
}
.site-header__inner {
    max-width: var(--maxw);
    margin-inline: auto;
    padding-inline: var(--gut);
    display: flex; align-items: center; gap: 2rem;
}
.brand { display: inline-flex; align-items: center; gap: 0.55rem; margin-right: auto; }
.brand__mark { width: 22px; height: 22px; color: var(--amber); transition: transform 0.5s var(--ease-out); }
.brand:hover .brand__mark { transform: rotate(-8deg) scale(1.08); }
.brand__word {
    font-family: var(--font-display);
    font-weight: 700; font-size: 1.4rem; letter-spacing: 0.02em;
}
.site-nav__list { display: flex; gap: clamp(1rem, 2vw, 2.2rem); }
.site-nav__list a {
    position: relative; font-size: var(--step--1); font-weight: 500;
    letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-soft);
    padding-block: 0.3rem; transition: color 0.3s;
}
.site-nav__list a::after {
    content: ""; position: absolute; left: 0; bottom: 0;
    width: 100%; height: 1px; background: var(--amber);
    transform: scaleX(0); transform-origin: right; transition: transform 0.4s var(--ease-out);
}
.site-nav__list a:hover { color: var(--ink); }
.site-nav__list a:hover::after,
.site-nav__list a.is-active::after { transform: scaleX(1); transform-origin: left; }
.site-nav__list a.is-active { color: var(--ink); }

.btn {
    display: inline-flex; align-items: center; gap: 0.6rem;
    font-weight: 600; font-size: var(--step--1);
    letter-spacing: 0.04em; text-transform: uppercase;
    padding: 0.85rem 1.6rem; border-radius: 999px;
    transition: transform 0.4s var(--ease-out), background 0.4s, color 0.4s, border-color 0.4s, box-shadow 0.4s;
    will-change: transform;
}
.btn--solid {
    background: var(--amber); color: var(--bg-deep);
    box-shadow: 0 0 0 0 oklch(0.80 0.148 61 / 0.5);
}
.btn--solid:hover { background: var(--ink); transform: translateY(-2px); box-shadow: 0 14px 40px -12px oklch(0.80 0.148 61 / 0.6); }
.btn--ghost {
    border: 1px solid var(--line); color: var(--ink);
}
.btn--ghost:hover { border-color: var(--amber); color: var(--amber); transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.97); transition-duration: 0.1s; }

.nav-toggle {
    display: none; width: 44px; height: 44px;
    position: relative; z-index: calc(var(--z-menu) + 1);
}
.nav-toggle span {
    position: absolute; left: 10px; right: 10px; height: 2px; background: var(--ink);
    transition: transform 0.4s var(--ease-out), opacity 0.3s;
}
.nav-toggle span:nth-child(1) { top: 17px; }
.nav-toggle span:nth-child(2) { bottom: 17px; }
body.menu-open .nav-toggle span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
body.menu-open .nav-toggle span:nth-child(2) { transform: translateY(-5px) rotate(-45deg); }

.mobile-menu {
    position: fixed; inset: 0; z-index: var(--z-menu);
    background: oklch(0.10 0.006 70 / 0.97);
    backdrop-filter: blur(8px);
    display: grid; place-items: center;
    opacity: 0; visibility: hidden;
    transition: opacity 0.5s var(--ease-out), visibility 0.5s;
}
body.menu-open .mobile-menu { opacity: 1; visibility: visible; }
.mobile-menu ul { display: flex; flex-direction: column; gap: 0.4rem; text-align: center; }
.mobile-menu a {
    font-family: var(--font-display); font-size: clamp(2rem, 9vw, 3.5rem);
    font-weight: 500; color: var(--ink-soft);
    display: inline-block; padding: 0.3rem 1rem;
    opacity: 0; transform: translateY(24px);
    transition: color 0.3s;
}
body.menu-open .mobile-menu a {
    animation: menuIn 0.6s var(--ease-out) forwards;
}
.mobile-menu li:nth-child(1) a { animation-delay: 0.10s; }
.mobile-menu li:nth-child(2) a { animation-delay: 0.16s; }
.mobile-menu li:nth-child(3) a { animation-delay: 0.22s; }
.mobile-menu li:nth-child(4) a { animation-delay: 0.28s; }
.mobile-menu li:nth-child(5) a { animation-delay: 0.34s; }
.mobile-menu li:nth-child(6) a { animation-delay: 0.40s; }
.mobile-menu a:hover { color: var(--amber); }
@keyframes menuIn { to { opacity: 1; transform: none; } }

.site-footer {
    position: relative; overflow: hidden; isolation: isolate;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 70%);
    padding: clamp(1.6rem, 1.2rem + 1.4vw, 2.4rem) var(--gut);
    border-top: 1px solid var(--line);
}
.site-footer__base {
    position: relative; max-width: var(--maxw); margin-inline: auto;
    display: flex; justify-content: space-between; align-items: center; gap: 0.4rem 1.6rem; flex-wrap: wrap;
    color: var(--muted); font-size: var(--step--1);
}
.site-footer__credit a { color: var(--ink-soft); transition: color 0.3s; }
.site-footer__credit a:hover { color: var(--amber); }

@media (max-width: 860px) {
    .site-nav, .site-header__cta { display: none; }
    .nav-toggle { display: block; }
    .site-footer__base { justify-content: center; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}